public static void ZoomMapToRegion(this XamGeographicMap geoMap, GeoRect region, TimeSpan zoomDuration)
{
Rect currentWindowRect = geoMap.WindowRect;
//GeoRegion geodeticGeoRegion = region;
var winRect = geoMap.GetZoomFromGeographic(region.ToRect());
//GeoRegion cartesianGeoRegion = ProjectMapRegion(geodeticGeoRegion, map);
//MapWindowRect = cartesianGeoRegion.ToRect();
var dTL = geoMap.WindowRect.TopLeft().DistanceVector(winRect.TopLeft());
var dTR = geoMap.WindowRect.TopRight().DistanceVector(winRect.TopRight());
var dBR = geoMap.WindowRect.BottomRight().DistanceVector(winRect.BottomRight());
var dBL = geoMap.WindowRect.BottomLeft().DistanceVector(winRect.BottomLeft());
var StartTime = DateTime.MinValue;
//var zoomInterval = zoomDuration.TotalMilliseconds / 2000.0;
var zoomInterval = zoomDuration.TotalMilliseconds / 2000.0;
var counter = 0;
var timer = new DispatcherTimer {
Interval = TimeSpan.FromMilliseconds(10)
};
timer.Tick += (o, e) =>
{
if (StartTime == DateTime.MinValue)
{
StartTime = DateTime.Now;
}
double tick = (DateTime.Now - StartTime).Ticks / TimeSpan.TicksPerMillisecond;
double duration = zoomDuration.TotalMilliseconds;
var factor = 50.0;
//TODO add logic for smooth transition between map's window Rect
//double lin = duration > 1.0 ? MathUtil.Clamp(tick / duration, 0.0, 1.0) : 1.0;
//var tLog = Math.Log(1.0 + factor * Math.E / (Math.E - 1.0));
//var trig = 0.5 - 0.5 * Math.Cos(Math.PI * factor);
//System.Diagnostics.Debug.WriteLine(" log " + tLog + " tri " + trig);
var top = geoMap.WindowRect.Top + (dTL.Y / factor);
var left = geoMap.WindowRect.Left + (dTL.X / factor);
var bottom = geoMap.WindowRect.Bottom + (dBR.Y / factor);
var right = geoMap.WindowRect.Right + (dBR.X / factor);
counter++;
var rect = new Rect(new Point(left, top), new Point(right, bottom));
if (counter > factor || winRect.Contains(rect))
{
((DispatcherTimer)o).Stop();
}
geoMap.WindowRect = rect;
};
timer.Start();
}
public static void ZoomMapToRegion(this XamGeographicMap geoMap, GeoRect region)
{
var windowRect = geoMap.GetZoomFromGeographic(region.ToRect());
geoMap.ZoomMapToWindow(windowRect);
}